HttpClient::$verifyHostAndPeer = 2

This value should be of type int instead of boolean. The PHP Docs say it should be int 2 for production.

Please merge + tag.

````
[ErrorException]                                                                                                     
  Notice: curl_setopt_array(): CURLOPT_SSL_VERIFYHOST set to true which disables common name validation (setting CURL  
  OPT_SSL_VERIFYHOST to 2 enables common name validation) in /../HttpClient.php line 148 
````
From the docs:
````
CURLOPT_SSL_VERIFYHOST	 
1 to check the existence of a common name in the SSL peer certificate. 2 to check the existence of a common name and also verify that it matches the hostname provided. In production environments the value of this option should be kept at 2 (default value).
````